/*css reset 重置默认样式*/
*,
::before,
::after{
    padding: 0;
    margin: 0;
    /*设置所有的盒子都是以边框开始计算，使用流式部局*/
    -webkit-box-sizing: border-box;/*要求兼容主流浏览器 webkit内核的必须*/
    box-sizing: border-box;
    /*清除移动端默认的点击高亮效果*/
    -webkit-tap-highlight-color: transparent;
}

body{
    font-size: 14px;
    font-family:"microsoft yahei",sans-serif;
}
ul,ol{
    list-style: none;
}
a{
    color: #333;
    text-decoration: none;
}
a:hover{
    color: #333;
}
input,textarea{
    outline: none;
    border: none;
    resize: none;
    /*清除移动端默认的输入框的默认样式*/
    -webkit-appearance: none;
}


/*css common 公用*/
.f_left{
    float: left;
}
.f_right{
    float: right;
}
/*清除浮动*/
.clearfix::before,
.clearfix::after{
    content: "";
    display: block;
    visibility: hidden;
    line-height: 0;
    height: 0;
    clear: both;
}
.m_b10{
    margin-bottom: 10px;
}
.m_t10{
    margin-top: 10px;
}
.m_l10{
    margin-left: 10px;
}
.m_r10{
    margin-right: 10px;
}
/*精灵图标*/
[class^="icon_"],[class*="icon_"]{
    background-image: url("../images/sprites.png");
    background-size:200px;
}

/*顶部通栏*/
.jd_topBar{
    width: 100%;
    height: 45px;
    border-bottom: 1px solid #e0e0e0;
    background: url("../images/header-bg.png");
    -webkit-background-size: 1px 44px;
    background-size:1px 44px;
    position: absolute;
    top: 0;
    left: 0;
}
.jd_topBar .icon_back,
.jd_topBar .icon_menu{
    position: absolute;
    top: 0;
    width: 40px;
    height: 44px;
    padding: 12px 10px;
    background-origin:content-box;
    background-clip: content-box;
}
.jd_topBar .icon_back{
    left: 0;
    background-position: -20px 0;
}
.jd_topBar .icon_menu{
    right: 0;
    background-position: -60px 0;
}
.jd_topBar form{
    width: 100%;
    height: 44px;
    padding: 0 40px;
}
.jd_topBar form input{
    width: 100%;
    height: 30px;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-top: 7px;
    padding: 0 10px;
}
.jd_topBar h3{
    font-weight: normal;
    text-align: center;
    height: 44px;
    line-height: 44px;
    font-size: 18px;
}